SEISMOLOGY AND GEOLOGY ›› 2009, Vol. 31 ›› Issue (2): 226-232.DOI: 10.3969/j.issn.0253-4967.2009.02.003

• Brief Report • Previous Articles     Next Articles

INVESTIGATION AND ANALYSIS TO CO-SEIMIC BLOWOUT IN CHAGAN WELL

CHE Yong-tai1, YU Jin-zi1, LIU Cheng-long1, WAN Yong-fang2, LUO Sheng-qin3, HE Yong-qing3, XIAO Zheng-dong3   

  1. 1. Institute of Geology, China Earthquake Administration, Beijing 100029, China;
    2. Analysis and Prediction Centre of Earthquake Administration of Guangdong Province, Guangzhou 510070, China;
    3. Earthquake Office of Meizhou City, Guangdong Province, Meizhou 514021, China
  • Received:2008-04-23 Revised:2009-01-07 Online:2009-03-11 Published:2009-11-27

差干井同震井喷现象的调查与分析

车用太1, 鱼金子1, 刘成龙1, 万永芳2, 罗胜钦3, 何永清3, 肖振东3   

  1. 1. 中国地震局地质研究所, 北京, 100029;
    2. 广东省地震局分析预报中心, 广州, 510070;
    3. 广东省梅州市地震办公室, 梅州, 514021
  • 作者简介:车用太,男,1942年生,1967年于中国科学院地质研究所喀斯特水文地质专业研究生毕业,研究员,主要研究方向为地震地下流体监测与预测研究,010-62009057,E-mail:che@ies.ac.cn.

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Abstract: Violent blowouts occurred in Chagan Well when the MS 8.7 Sumatra earthquake happened on Dec.26,2004,with the eruptive fountain up to 60m high.The result of investigation and analysis of Chagan well indicates that blowout occurred in the condition of special hydrogeology.The water of monitoring layer was rich of CO2.When the aquifer of monitoring was disturbed by the earthquake wave,a large number of absorbed gases were released.On the other hand,free bubble was broken by the earthquake wave and the groundwater was gasified,leading to the rapid increase of the pore pressure.

Key words: blowout, coseismic effect, Chagan well

摘要： 差干井在2004年12月26日印尼MS8.7地震时发生强烈井喷,喷柱高达60m。调查与分析结果表明,井喷是在特定的井区水文地质条件下,富含CO2气体的观测含水层地下水受到地震波的扰动,一方面使大量吸附气被释放,另一方面使游离气泡被打碎,导致地下水被"汽"化,从而使含水层孔隙压力剧增引起的。

关键词: 井喷, 同震效应, 差干井

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